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  • threader

    I have this threader for my lathe and have no idea how it works.If anyone has any info or links for this I would appreciate it if you would share it with me
    thank you
    Al
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  • #2

    Re: threader

    What makes it a ''threader''? I have never seen such a device, looking forward to finding out more.
    Rob

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    • #3

      Re: threader

      its a Carba-tec. i cant find anything on the net

      Comment


      • #4

        Re: threader

        it came from lee valley on one of their year end flash sales.yt was sold as a threader an came with a cutter but no instruction. i did find that it is no longer made

        Comment


        • #6

          Re: threader

          https://www.ukworkshop.co.uk/forums/...od-t40558.html

          https://www.woodworkforums.com/f8/th...ter-jig-195168

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          • #7

            Re: threader

            Alan, I had some trouble with this forum loading up, so never saw your post, sorry.

            The threader works with the piece held on your threader either on a faceplate or in a chuck that threads onto the spindle of the threader, the cutter is held in your lathe and spins fast.

            As you rotate the spindle of your threader, with the to be threaded piece mounted, it rotates and goes forward, and the cutter will cut the thread.

            So that is basically it, depending the thread on the threader spindle, it will make that same thread on your piece, you could get different spindles as I recall for other size threads.

            You have to mount the threader at your lathes center height, so you probably have to make a riser to do that, and it has to be in line with your lathes spindle, or you will get a tapered thread.

            You have to turn the piece to the exact size, so that the thread when cut, fits in the other part with the same thread, so you will have to calculate the sizes your pieces have to be, chamfer the edges to get a nicer start of the thread.

            When you have made the thread cut, do not just back the piece up, as it will probably destroy the thread you just made, for the simple reason that any slack or play in your setup would now cut a thread at a slightly different place.

            Hard dense wood works best, and don’t make a total sharp thread, as the tops of the thread will break very easily.

            That’s all I can think off right of the top of my head, have fun, take your time to figure it out and write it down.


            I’ll add a couple more threading setups here that maybe help with visualizing how it is used, couple are home build and use a router to get a higher speed on the cutter.

            Whoops, looks like I made a new thread, see below
            Last edited by Leo Van Der Loo; 05-18-2020, 11:27 AM.

            Have fun and take care
            Leo Van Der Loo

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            • #8

              Re: threader

              Originally posted by Leo Van Der Loo View Post
              Hard dense wood works best, and don’t make a total sharp thread, as the tops of the thread will break very easily.

              That’s all I can think off right of the top of my head, have fun, take your time to figure it out and write it down.
              Leo have you done wood threading with your metal lathe? Does it go down to 2 threads per inch or there abouts?

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              • #9

                Re: threader

                These are some of the setups I have pictures of.

                Have fun and take care
                Leo Van Der Loo

                Comment


                • #10

                  Re: threader

                  Fred Holder had a book on making wood threads and there are versions of that jig or ones like it and how to use them in it. I have one squirrelled away somewhere.

                  https://www.amazon.ca/Making-Screw-T.../dp/1861081952

                  Pete

                  I sit corrected. I found the book in my "library" and it doesn't have that jig in it, just the working principles of that type.
                  Last edited by QC Inspector; 05-18-2020, 11:49 AM.

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                  • #11

                    Re: threader

                    Originally posted by iamtooler View Post

                    Leo have you done wood threading with your metal lathe? Does it go down to 2 threads per inch or there abouts?
                    No I have not done any wood threading on my metal lathe, I don’t recall to what speed the carriage can be moved in relation to the spindle speed, no intention to do anything like that anymore.

                    Have fun and take care
                    Leo Van Der Loo

                    Comment

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                    • #12

                      Re: threader

                      Most smaller metal lathes have 4 threads per inch as the lowest pitch. My 12x36 is that way. It isn't until you get bigger machines that would have the power to cut 2 TPI threads. Now with a CNC lathe or a retrofit to a smaller one you could.

                      Pete

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                      • #13

                        Re: threader

                        Thanks all. A kind person from Englad sent me a PDF of the manual
                        Al

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                        • #14

                          Re: threader

                          Originally posted by akuntz View Post
                          Thanks all. A kind person from Englad sent me a PDF of the manual
                          Al
                          great can you post it here somewhere?

                          Comment


                          • #15

                            Re: threader

                            here is the manual
                            cabra tec.pdf

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